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3 years ago

8

Why is it helpful to estimate the answer before adding or subtracting decimals?

1 answer:

slava [35]3 years ago

7 0

<span>Being able to estimate your answer is a very useful skill. ... When decimals are involved, it's very easy to put the decimal point in the wrong place, and ... round all numbers to the same place value—this makes adding or subtracting a bit easier.</span>

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Please answer this correctly

AlexFokin [52]

Answer:

8000 cubic centimeters

Step-by-step explanation:

The surface area of a cube is 6 times the square of the side length. If we call the side length of the cube s:

$6s^2=2400 \\\\s^2=400 \\\\s=20$

Since the volume of a cube is the side length cubed, the volume of this is $20^3=8000\text{ cm}^3$ .

Hope this helps!

5 0

4 years ago

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Multistep: Cara has $25. She buys a shirt for $13.68. She buys a hat that is half the cost of the shirt. Which is the best estim

ch4aika [34]

If you solve the question you should get 20 dollars and 52 cents so maybe it is estimated to 20 dollars

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4 years ago

What is the solution for 10x + 3 = 6x +5

OLga [1]

Answer:

x=1/2

Step-by-step explanation:

10x+3=6x+5

10x-6x=5-3

4x=2

divide both by 4

x=1/2

7 0

3 years ago

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Convert fraction with numerator 6 and denominator 15 to a decimal. 0.1 0.2 0.3 0.4

natulia [17]

$\frac{6}{15}=\frac{6 \div 3}{15 \div 3}=\frac{2}{5}=\frac{2 \times 2}{5 \times 2}=\frac{4}{10}=\boxed{0.4}$

8 0

3 years ago

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What is the algebraic expression of 7w-6-3w+5

Anna007 [38]

Combine like terms

7w - 3w = 4w

-6+5 = -1

4w - 1

Final answer: 4w - 1

4 0

4 years ago

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